Angry Poles besiege a junction (10)
I believe the answer is:
crossroads
'junction' is the definition.
(thesaurus)
'angry poles besiege a' is the wordplay.
'angry' becomes 'cross' (I've seen this before).
'poles' becomes 'rods' ('rod' can be a synonym of 'pole').
'besiege' indicates putting letters inside.
'rods' enclosing 'a' is 'roads'.
'cross'+'roads'='CROSSROADS'
(Other definitions for crossroads that I've seen before include "Soap once" , "critical situation?" , "Meeting of ways" , "Intersection of ways" .)